JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY A-CHEMISTRY
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2025
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IF 4.7
Suping Zhang,Shuang Zhou,Qianchen Ou,Likang Zhou,Qiaoyi Xiao,Yuan Lian,Liping Guo,Hongmei Wang
Ru-doped ZnIn 2 S 4 (Ru-ZnIn 2 S 4 ) nanostructures were prepared by doping different amounts of Ru into ZnIn 2 S 4 through a one-step hydrothermal method. The structure, morphology, band structure, light absorption and photoelectrochemical properties of as-prepared samples were characterized by a series of characterization methods such as XRD, TEM, SEM, UV–vis DRS, PL and TRPL. These results show that doping Ru into ZnIn 2 S 4 effectively improves the separation and transfer efficiency of photogenerated electrons and holes. When the addition amount of RuCl 3 is 30 µmol, the photocatalytic hydrogen production performance reaches its optimum, achieving a hydrogen production rate of 5974.7 μmol·g −1 ·h −1 , which is 15.9 times greater than that of pure ZnIn 2 S 4 . In the experiment of hydrogen production coupled with tetracycline (TC) degradation, the degradation rate of TC for 0.03Ru-ZnIn 2 S 4 reaches 70.2 %, and the hydrogen production rate reaches up to 202.8 μmol·g −1 ·h −1 , effectively achieving the hydrogen energy conversion and degradation of TC. This study presents a novel strategy for the treatment of wastewater by photocatalysis and realization of energy recovery as well as wastewater treatment.
研究领域:
材料科学
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环境科学
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能源科学
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产品关联
DOI
高影响因子
MATERIALS SCIENCE AND TECHNOLOGY
·
2023
·
IF 1.8
Hong Zeng,Wenbin Liu,Feitong Han,Chongbin Wei
Here, the effects of Ru and ball-milling on the mechanical properties of WC–10Co-cemented carbide were investigated using systematic characterisation and microstructure analysis. It was found that with an increase in the Ru content, the WC grain morphology and grain size did not change; however, the values of density and coercivity, Co magnetism, hardness, and fracture toughness of cemented carbide were changed. When the Ru content was 4%, compared with the alloy without Ru, the toughness increased from 16.8 to 24.2 (MPa. m1/2) and the hardness increased from 1290 to 1330 (HV30). Meanwhile, the analysis of the mixing process shows that the optimal ball-milling time is determined by the performance combination of the obtained alloy.
研究领域:
材料科学
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机械工程
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DOI
高影响因子
MATERIALS SCIENCE AND TECHNOLOGY
·
2022
·
IF 2.06
Hong Zeng,Wenbin Liu,Chongbin Wei
This study investigated the microstructure and properties of cemented carbides before and after the addition of Ru. The hardness and elastic modulus of the binder phase of Ru-containing cemented carbides were higher, and the hardness at room temperature and high temperature were also high. In particular, the oxidation resistance of Ru-containing cemented carbides was enhanced at high temperatures. Therefore, the solid solution-strengthening effect of the binder phase containing Ru was significant, which was conducive to the improvement of the high-temperature hardness and enhancement of the high-temperature characteristics of the alloy.
研究领域:
材料科学
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金属学
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产品关联
DOI
高影响因子
JOURNAL OF CATALYSIS
·
2018
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IF 6.759
Zhao Yang,Wenhan Chen,Jinbao Zheng,Zhiqing Yang,Nuowei Zhang,Chuan-Jian Zhong,Bing Hui Chen
Carbon supported Pt-Ru nano-alloy with multiple reactive sites exhibits unprecedentedly efficient performance in acetone hydrogenation at room temperature. Catalytic properties can be controllably regulated and optimized via performing the specific annealing treatment for the catalyst. The essential correlation between the variations in catalyst’s annealing conditions and the resultant variation in catalytic properties has been explored and discussed as a structure-function relationship. The combination of Pt and Ru sites exhibits enhanced catalytic activity compared with monometallic ones. Larger PtRu alloy particle size favors the rapid C O hydrogenation and the improvement of catalytic selectivity to isopropanol. Isopropyl ether generation is related to the Pt defect sites on the surface, which can be blocked though the catalyst’s oxidation treatment . The presence of surface metal-oxide species is beneficial to the performance enhancement, resulting from the synergetic behavior between metal-oxide sites and metallic sites on respectively activating the reactants. Moreover, 3-pentanone is used as a probe molecule to verify the structure-function relationship of catalytic low-temperature C O hydrogenation on PtRu/C.
研究领域:
催化化学
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材料科学
✓ 已验证
产品关联
DOI
高影响因子
APPLIED CATALYSIS B-ENVIRONMENTAL
·
2022
·
IF 24.319
Jing Wang,Bingxin Guo,Junting Sun,Yingshuang Zhou,Chengfei Zhao,Zhongzhe Wei,Junjie Guo
The design and construction of electrocatalysts with multiple components to modulate the intrinsic catalytic activity is a compelling strategy to achieve Pt-like activity for hydrogen generation. Challenging on the inert Cu-based electrocatalysts for water reduction, herein, a novel and fruitful CuRu-based electrocatalysts (RuCuO x /NC) is established by combining dual-templates assembling and pyrolysis protocol with a subsequent hot-alkali corrosion. Benefitting from the synergetic effect of Cu 2+1 O (with copper excess defects) and Ru, the as-prepared RuCuO x /NC affords brilliant activity and stability under alkaline condition. In 1 M KOH, the RuCuO x /NC provides Pt-like activity with overpotential of ∼29 mV to reach 10 mA cm −2 . Theoretical calculations certified that H 2 O dissociation was accelerated and hydrogen adsorption free energy was optimized by the cooperation of Cu 2+1 O and Ru. This work proposes a promising methodology to construct multi-components electrocatalysts, which may lend perspective for the design of advanced electrocatalysts for renewable energy systems.
研究领域:
材料科学
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可再生能源
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产品关联
DOI
高影响因子
CHEMPHYSCHEM
·
2021
·Vol. 22
·期 17
·1785-1791
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IF 3.102
Linghui Zhang,Zheng Hu,Hui Li,Qianqian Ren,Yishu Qiu,Jianqiang Qu,Shi Hu
Graphical NiO@Ru nanosheets with NiRuO 3 interface is constructed on Ni foam by two-step method of Cl − corrosion followed by Ru deposition. This self-supported electrode with low Ru loading amount exhibits excellent performance toward overall water splitting in alkaline due to intimate interface contact, low impedance, and high surface hydrophilicity. Electrocatalytic water splitting for hydrogen production from renewable energy requires the innovation of electrocatalysts with high activity and low cost. In this work, densely packed NiO@Ru nanosheets were fabricated on the surface of Ni foam through a two-step method of Ni(OH) 2 growth followed by Ru deposition. Through pair distribution function analysis from selected-area electron diffraction and X-ray photoelectron spectroscopy, the interface structure feature is revealed as a thin layer of perovskite NiRuO 3 sandwiched between NiO and Ru. The electrode exhibits high activity and durability for HER and OER, delivering a current density of 10 mA cm −2 at a voltage of 1.55 V for overall water splitting in 1 M KOH. The excellent performance can be attributed to the intimate interface contact of NiO and Ru in addition to low charge transfer resistance and super-hydrophilic surface structure, as verified by the electrochemical impedance spectroscopy and contact-angle measurement.
研究领域:
材料科学
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电化学
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产品关联
DOI
PubMed
高影响因子
CATALYSIS LETTERS
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2019
·Vol. 149
·期 4
·1007-1016
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IF 2.372
Liu Pengcheng,Niu Ruyue,Li Wei,Wang Shuang,Li Jinping
Three Ru/CeO 2 catalysts with different morphologies of CeO 2 (cube spheres, microspheres and nano rods) were used to evaluate the support-morphology-dependent ammonia synthesis activity. Catalytic experiments show that the Ru/CeO 2 –CS catalyst has higher catalytic activity (27,000 µmol g −1 h −1 ) than Ru/CeO 2 –MS (21,000 µmol g −1 h −1 ) and Ru/CeO 2 –NR (15,000 µmol g −1 h −1 ) under the reaction conditions of 450 °C, 3 MPa, H 2 /N 2 = 3:1 (60 mL min −1 ). The transmission electron microscopy analysis showed that the dispersion of active metal Ru is affected by the morphology of CeO 2 . Brunauer–Emmett–Teller indicates that the 3–5 nm the pore size of CeO 2 supports contributes to the active metal Ru enters the pores of the CeO 2 support, which improves the dispersion of Ru and prevents the sintering and agglomeration of Ru in some extent. TPR studies shown that the reduction of ruthenium oxide is influenced by the morphology of CeO 2 . XPS and CO 2 -TPD demonstrated that the Ru/CeO 2 –CS catalyst exhibited higher surface oxygen vacancies, higher basic site density and lower Ru binding energy, indicating that Ru nanoparticles in Ru/CeO 2 –CS is more electron-rich and are more capable of back-donating electrons to adsorbed N 2 and subsequently activate N 2 . Our results indicate that the morphology effect of the CeO 2 supports on the Ru/CeO 2 catalyst is related to the pore size distribution and the surface oxygen vacancies of the CeO 2 supports, ratio of Ru n+ , basic site density. Graphical Abstract
The CeO 2 –CS (cube spheres) morphology facilitated the dispersion of the active metal Ru and the 3 nm the pore size of CeO 2 –CS contributed to the Ru enters the pores of the support. And the Ru/CeO 2 –CS catalyst exhibited higher surface oxygen vacancies and lower Ru binding energy, which enhanced the adsorption of hydrogen and nitrogen species and thus weakened the N≡N bond.
研究领域:
催化化学
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材料科学
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产品关联
DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2023
·
IF 15.1
Shu Zhang,Rui Sun,Pengxin Guan,Yaofeng Wang,Ling Wang,Yanli Zhu,Lijun Han,Jiayu Xin
Alkoxycarbonylation of alkene has been an important basis in modern chemical industry. As the cheapest noble metal, the potential of ruthenium furnishes significant innovations in the homogeneous catalysis. However, the competitive hydrogenation of alkenes to alkanes represents the most challenge in the alkoxycarbonylation of alkene. Herein, the chloride anions-assisted Ru-catalyzed methoxycarbonylation of methyl pentenoate was investigated. The chemoselectivity of methoxycarbonylation can be improved by controlling the ratio of LiCl/Ru 3 (CO) 12 . Mechanistic experiments show that the activation energy of hydrogenation is increased due to the change of the active species by increasing the amount of LiCl, which hinders the hydrogenation of methyl pentenoate. The di-methoxycarbonylation of 1,7-octadiene indicates that this methodology has the potential to develop the Ru-catalyzed di-methoxycarbonylation of diene substrates.
研究领域:
催化
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有机化学
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工业化学
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DOI
高影响因子
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
·
2023
·Vol. 25
·期 12
·8556-8563
·
IF 3.3
Zijian Wang,Jiaxin Zhang,Lele Yan,Bo Zhao,Lin Zheng,Haoran Guo,Yuxue Yue,Deman Han,Xianlang Chen,Rongrong Li
4-Chloroaniline (4-CAN) plays an important role in chemical and industrial production. However, it remains a challenge to avoid the hydrogenation of the C–Cl bond in the synthesis process to improve selectivity under high activity conditions. In this study, we in situ fabricated ruthenium nanoparticles (Ru NPs) containing vacancies inserted into porous carbon (Ru@C-2) as a highly efficient catalyst for the catalytic hydrogenation of 4-chloronitrobenzene (4-CNB) with remarkable conversion (99.9%), selectivity (99.9%), and stability. Experiments and theoretical calculations indicate that the appropriate Ru vacancies affect the charge distribution of the Ru@C-2 catalyst, promote the electron transfer between the Ru metal and support, and increase the active sites of the Ru metal, thus facilitating the adsorption of 4-CNB and the desorption of 4-CAN to improve the activity and stability of the catalyst. This study can provide some enlightenment for the development of new 4-CNB hydrogenation catalysts.
研究领域:
催化
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材料科学
·
化学工程
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产品关联
DOI
PubMed
高影响因子
APPLIED SURFACE SCIENCE
·
2024
·
IF 6.3
Min Chen,Longgang Liu,Xueyan Chen,Xiaoxiao Qin,Kunlin Li,Jianghao Zhang,Xiaolei Bao,Lingjuan Ma,Changbin Zhang
The influence of metal particle size over heterogeneous catalysts on the catalytic performance has always been an interesting subject due to its significance from both fundamental and practical perspectives. In this work, we regulated the synthesis of TiO 2 by the hydrolysis of different titanium precursors, and as-prepared TiO 2 supports were employed to load Ru with impregnation method. Interestingly, we synthesized three Ru-TiO 2 catalysts with different Ru particle sizes of 1.1, 2.9 and 5.2 nm. The Ru-TiO 2 catalysts were next tested for CO 2 hydrogenation reaction, the results show that the medium Ru particles on TiO 2 exhibited the best CO 2 methanation activity. Based on the characterizations, we observed that the medium Ru particles exhibited the best redox properties compared with small and large Ru particles, which was beneficial to the H 2 dissociation; in addition, the medium Ru particles exhibited a moderate ability to activate CO 2 , resulting in the most favorable formation and decomposition of bidentate bicarbonate. Consequently, the Ru-TiO 2 catalyst with medium Ru particles showed the highest activity for CO 2 methanation. This study provides a new method to prepare Ru-TiO 2 catalysts with different Ru sizes and also presents an understanding of Ru particle size effects on CO 2 hydrogenation.
研究领域:
催化化学
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材料科学
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产品关联
DOI
高影响因子
Inorganic Chemistry Frontiers
·
2022
·Vol. 9
·期 15
·3885-3897
·
IF 7.779
Kefeng Wang,Bin Li,Jingxiao Ren,Wenxia Chen,Jinhai Cui,Wei Wei,Peng Qu
Water splitting by electricity is believed to be a promising approach to obtain high-purity H2 on a large scale. Highly efficient electrocatalysts are of great importance for the electrocatalytic hydrogen evolution reaction (HER). Herein, we designed a highly efficient electrocatalyst (Ru@Ni3S2) for the HER by immersing Ni3S2 nanorod arrays into a RuCl3 aqueous solution. The obtained Ru@Ni3S2 with an increased electrochemical surface area and a decreased charge-transfer resistance demonstrates an enhanced electrocatalytic performance toward the HER in alkaline media, suggested by an overpotential of −19.8 mV to achieve a current density of 10 mA cm−2 and a Tafel slope of 33.2 mV dec−1. Both the in situ formed Ru nanoparticles and the adsorbed Ru3+ ions are responsible for the electrocatalytic hydrogen evolution reaction. Density functional theory (DFT) calculations reveal that the enhanced electrocatalytic HER activity of Ru@Ni3S2 compared with pure Ru can be ascribed to the lowered water dissociation energy barrier as well as the more favorable adsorption energy for the H intermediate (H*). During the long-term stability test, the adsorbed Ru3+ on the Ni3S2 nanorods would be converted to Ru(OH)3, leading to attenuated electrocatalytic activity. This drawback can be overcome by further surface modification with polyaniline (PANI). The obtained PANI–Ru@Ni3S2 exhibits a comparable catalytic HER activity to Ru@Ni3S2 but an extraordinary stability with continuous electrolysis at a current density of 20 mA cm−2 for 35 hours. Our design strategy here for synthesizing the Ru@Ni3S2 hybrid and effectively improving the stability of Ru-based catalysts could be extended to develop other noble metal/transition metal sulfides for practical water electrolysis and other applications.
研究领域:
材料科学
·
催化化学
✓ 已验证
产品关联
DOI
高影响因子
APPLIED CATALYSIS B-ENVIRONMENTAL
·
2024
·
IF 20.2
Xinyu Wang,Junhua You,Jiali Ren,Yanjun Xue,Jian Tian,Hangzhou Zhang
In this paper, the Ru/RuS 2 nanoparticles as dual co-catalysts were self-assembled on the surface of g-C 3 N 4 nanotubes (Ru/RuS 2 /g-C 3 N 4 NTs) for photocatalytic H 2 production. The Ru/RuS 2 /g-C 3 N 4 NTs showed greatly enhanced photocatalytic H 2 production activity (1409 μmol·g −1 ·h −1 ), 1.16 times of RuS 2 /g-C 3 N 4 NTs (1212 μmol·h −1 ·g −1 ), 10.51 times of Ru/g-C 3 N 4 NTs (134 μmol·g −1 ·h −1 ), and 82.88 times of the pure g-C 3 N 4 NTs (17 μmol·g −1 ·h −1 ). Besides, the apparent quantum yield value (AQE) of Ru/RuS 2 /g-C 3 N 4 NTs is 3.92% at 370 nm. Ru/RuS 2 as dual co-catalysts are self-assembled on the surface of g-C 3 N 4 NTs and show strong electronic synergistic interaction between the interfaces, reduce Δ G H* of RuS 2 and desorption energy of Ru, and promote the selectivity and activity of HER kinetically and thermodynamically respectively, which exhibits higher photogenerated carrier concentration and lower charge migration resistance than RuS 2 and Ru, showing the synergistic effect to facilitate the generation and migration of carriers and provides active sites for photocatalysis .
研究领域:
材料科学
·
能源化学
✓ 已验证
DOI
高影响因子
危险品化学品经营许可证（带存储）